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<meta name="twitter:description" content="Front-matter 是文件最上方以 --- 分隔的区域，用于指定个别文件的变量，举例来说： title: Hello Worlddate: 2013/7/13 20:46:25--- 以下是预先定义的参数，您可在模板中使用这些参数值并加以利用。    参数 描述 默认值     layout 布局    title 标题    date 建立日期 文件建立日期   updated 更新日期">
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                <h1 class="article-title" itemprop="name">Front-matter</h1>
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                <p>Front-matter 是文件最上方以 <code>---</code> 分隔的区域，用于指定个别文件的变量，举例来说：</p>
<figure class="highlight yaml"><table><tr><td class="code"><pre><span class="line"><span class="attr">title:</span> <span class="string">Hello</span> <span class="string">World</span></span><br><span class="line"><span class="attr">date:</span> <span class="number">2013</span><span class="string">/7/13</span> <span class="number">20</span><span class="string">:46:25</span></span><br><span class="line"><span class="meta">---</span></span><br></pre></td></tr></table></figure>
<p>以下是预先定义的参数，您可在模板中使用这些参数值并加以利用。</p>
<table>
<thead>
<tr>
<th>参数</th>
<th>描述</th>
<th>默认值</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>layout</code></td>
<td>布局</td>
<td></td>
</tr>
<tr>
<td><code>title</code></td>
<td>标题</td>
<td></td>
</tr>
<tr>
<td><code>date</code></td>
<td>建立日期</td>
<td>文件建立日期</td>
</tr>
<tr>
<td><code>updated</code></td>
<td>更新日期</td>
<td>文件更新日期</td>
</tr>
<tr>
<td><code>comments</code></td>
<td>开启文章的评论功能</td>
<td>true</td>
</tr>
<tr>
<td><code>tags</code></td>
<td>标签（不适用于分页）</td>
<td></td>
</tr>
<tr>
<td><code>categories</code></td>
<td>分类（不适用于分页）</td>
<td></td>
</tr>
<tr>
<td><code>permalink</code></td>
<td>覆盖文章网址</td>
<td></td>
</tr>
</tbody>
</table>
<h2 id="分类和标签" class="article-heading"><a href="#分类和标签" class="headerlink" title="分类和标签"></a>分类和标签<a class="article-anchor" href="#分类和标签" aria-hidden="true"></a></h2><p>只有文章支持分类和标签，您可以在 Front-matter 中设置。在其他系统中，分类和标签听起来很接近，但是在 Hexo 中两者有着明显的差别：分类具有顺序性和层次性，也就是说 <code>Foo, Bar</code> 不等于 <code>Bar, Foo</code>；而标签没有顺序和层次。</p>
<figure class="highlight yaml"><table><tr><td class="code"><pre><span class="line"><span class="attr">categories:</span></span><br><span class="line"><span class="bullet">-</span> <span class="string">Diary</span></span><br><span class="line"><span class="attr">tags:</span></span><br><span class="line"><span class="bullet">-</span> <span class="string">PS3</span></span><br><span class="line"><span class="bullet">-</span> <span class="string">Games</span></span><br></pre></td></tr></table></figure>
<blockquote class="note warn"><strong class="note-title">分类方法的分歧</strong><p>如果您有过使用WordPress的经验，就很容易误解Hexo的分类方式。WordPress支持对一篇文章设置多个分类，而且这些分类可以是同级的，也可以是父子分类。但是Hexo不支持指定多个同级分类。下面的指定方法：<br>categories:<br>- Diary<br>- Life<br>会使分类<code>Life</code>成为<code>Diary</code>的子分类，而不是并列分类。因此，有必要为您的文章选择尽可能准确的分类。</p>
</blockquote>
<h2 id="JSON-Front-matter" class="article-heading"><a href="#JSON-Front-matter" class="headerlink" title="JSON Front-matter"></a>JSON Front-matter<a class="article-anchor" href="#JSON-Front-matter" aria-hidden="true"></a></h2><p>除了 YAML 外，你也可以使用 JSON 来编写 Front-matter，只要将 <code>---</code> 代换成 <code>;;;</code> 即可。</p>
<figure class="highlight"><table><tr><td class="code"><pre><span class="line">"title": "Hello World",</span><br><span class="line">"date": "2013/7/13 20:46:25"</span><br><span class="line">;;;</span><br></pre></td></tr></table></figure>

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